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Pumps with dry rotor made of IRG cast iron

Dry Rotor Pump IRG Series

Dry rotor pumps of the IRG series - vertical single-stage centrifugal pumps with nozzles "In-line". This design of these pumps makes them more resistant to mechanical inclusions in the pumped liquid in comparison with similar pumps with a "wet" rotor. Their universal design ("in-line") allows quick dismantling of the pump from the pipeline without dismantling the system elements pipeline.

Characteristic

  • Pumps with dry rotor made of cast iron IRG have a vertically located electric motor, and the suction and pressure nozzles are located on the same axis, which allows them to be installed directly on the pipeline (in-line); the pumps have compact dimensions, do not take up much space and can be installed outdoors (under a canopy);
  • Impeller for dry pumps the IRG rotor is located directly on the extended motor shaft, so that the pumps run quietly without creating high vibration, and the pump casing is connected to the motor in such a way that can significantly reduce axial pressure during pump operation;
  • For pump shaft seal a mechanical seal or a combination of different seals is used; in addition, a titanium alloy of which a seal is manufactured, extending the service life of the pumps.

Features of pumps

In a dry rotor, the pumping part with the impeller has direct contact with the pumped medium. And the motor separated from the pumping part by a rotating shaft and a sliding mechanical seal. Sliding mechanical seal is a dynamic seal and is used to seal the gap between the rotating pump shaft and its body.

The range of IRG dry rotor pumps made of cast iron

Model Consumption
(m3/hour)
Pressure
(m)
Power
(kw)
Turnovers
(rpm)
Diameter
(mm)
NPSN
(mm)
Efficiency
(%)
The weight
(kg)
50-125A 11 16 1.1 2900 50 2.3 57 38
50-125 (I) A 22.3 16 2.2 50 2.5 66 48
50-200 (I) A 23.5 44 5.5 50 2.5 57 107
65-125 25 20 3 65 2.5 68 58
65-160 25 32 4 65 2.5 63 75
65-200 25 50 7.5 65 2.5 58 107
65-250 25 80 15 65 2.5 50 180
80-125 50 20 5.5 80 3.0 72.5 99
80-100 (I) 10012.5 5.5 80 4.5 76 108
80-125 (I) 10020 11 80 4.5 76 163
80-160 50 32 7.5 80 3.0 71 105
80-200 50 50 15 80 3.0 67 175
100-100A 89 10 4 1004.5 74 91
100-160 10032 15 1004.5 76 191
100-200 10050 22 1004.0 74 245
100-200 (I) 160 50 37 1005.2 79 402
200-315 200 32 30 1450 200 3.5 78 417
200-400A 187 44 37 200 3.5 74 462
200-250 (I) A 358 16 20 200 4.0 73 405
200-315 (I) 400 32 55 200 4.0 80 675
200-315 (I) A 374 28 45 200 4.0 79 560
200-315 (I) B 346 24 37 200 4.0 78 535

Pump performance diagrams with dry rotor IRG

Performance diagrams of dry rotor pump IRG series

Specifications

Pump data Materials

Stage No. pressure
Min. liquid temperature
Max. liquid temperature

PIN 16
-20oC
+120oC

Housing
Shaft
Working wheel
Slip. ends. seal
Shroud

cast iron
25
GG 20
AQ1EGG
cast iron

Pump diagram

Dry rotor pump diagram IRG series

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